Si

Si
SI is the International System of Units.
SI, Si, or si may also refer to:
Arts, entertainment, and media
Literature
Si (novel), a 2014 novel by Bob Ong
Sí (Peruvian magazine), a magazine notable for its anti-corruption reporting
Skeptical Inquirer, an American magazine covering topics on science and skepticism
Sports Illustrated, an American sports magazine
Music
Sí (Julieta Venegas album), released in 2003
Sì (Andrea Bocelli album), released in 2018
"Sí" (Martin Jensen song), a 2015 song
Si (musical note), the seventh note in the traditional fixed do solfège
Sì (operetta), an operetta by the Italian composer Pietro Mascagni
"Sì" (Gigliola Cinquetti song), the Italian entry to the Eurovision Song Contest 1974
Si (Zaz song), 2013
Sí, a 2013 Spanish album by Malú
"Sì", a 1985 song released by Italian actress Carmen Russo
Other uses in arts, entertainment, and media
Si (film), original title of the 2010 South Korean film Poetry
Enterprises and organisations
Computing
Swiss Informatics Society, a Swiss organization of computer science educators, researchers, and professionals
The SI, a former name of the American defense contractor Vencore
Education
St. Ignatius College Preparatory, a Jesuit high school in San Francisco, California, US
Silay Institute, a private college in the Philippines
Government
Si, a South Korean administrative unit
Survey of India, an Indian government agency responsible for managing geographical information
Swedish Institute (Svenska institutet), a Swedish government agency which promotes Sweden abroad
Politics
Sarekat Islam, a socio-political organization in Indonesia under Dutch colonial rule
Catalan Solidarity for Independence, a Catalan political party
Situationist International, an organization of social revolutionaries
Socialist International, a worldwide organization of political parties
Solidarity and Equality, an Argentine political party (Spanish: Solidaridad e Igualdad)
Transportation
Blue Islands (IATA airline code, SI)
Skynet Airlines (IATA airline code SI, ceased operating 2004)
Spokane International Railroad (reporting mark SI), a former railway in Washington, US
Other enterprises and organizations
Samahang Ilokano, a fraternity/sorority based in the Philippines
SÍ Sørvágur, a Faroese sports association
Society of Indexers, a professional society based in the UK
Sports Interactive, a British computer games development company
People with the name
Si (surname), a Chinese surname
Si (given name)
Places
Mount Si, a mountain in the U.S. state of Washington
Province of Siena (postal code and vehicle registration plate code)
Si County, Anhui, China
Si River, in China
Slovenia's ISO 3166-2 code
Science and technology
Biology and healthcare
Sacroiliac, an anatomical abbreviation for the sacroiliac (joint)
Self-injury, intentional, direct injuring
Shock index, a measurement used to determine if a person is suffering shock
Chemistry
si, a chemical descriptor; See prochirality
Silicon, symbol Si, a chemical element
Disulfur diiodide, empirical formula SI
Computing and Internet
.si, the Internet country code top-level domain for Slovenia
Shift In, an ASCII control character
SI register, or source index, in X86 computer architecture
Swarm intelligence, an artificial intelligence technique
Synthetic intelligence, an alternate term for or a form of artificial intelligence
Motor vehicles
Honda Civic Si, an automobile
Spark-ignition engine, a type of internal combustion engine
Other uses in science and technology
Signal integrity, electronic circuit tools and techniques that ensure electrical signals are of sufficient quality
Sine integral, Si(x)
Spectral interferometry, attosecond physics technique
Titles and ranks
Si, a Maghrebi Arabic variant of Sidi, a title of respect
Si, a variant of the Thai honorific Sri
Station inspector, a rank in the Singapore Police Force
Sub-inspector, a rank in Indian Police forces
Other uses
Statutory instrument (UK), abbreviated SI, the principal form in which delegated legislation is made in Great Britain
Sì (dessert), a Chinese dessert
Sídhe or Si, Celtic mythological beings
si, the Sinhala language ISO 639 alpha-2 code
Supplemental instruction, an academic support program often used in higher education
See also
S1 (disambiguation)